Browsing by Author "Kucukbursa, A"
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Item Self-consistent calculations of isospin admixtures in the ground states of the N = Z nuclei in the mass region of 50-100Babacan, T; Salamov, DI; Kucukbursa, AIn the present study, based on spherical shell-model wave functions and energies with the pairing and the residual Fermi interaction treated in pn QRPA, the isospin admixture probabilities in the ground state of N = Z even-even nuclei from Z = 28 to Z = 50 are investigated. In these calculations, considering the restoration of the isotopic invariance for the nuclear part of the Hamiltonian, the residual interaction strength parameter in the quasiparticle space has been obtained in such a way that it is self-consistent with the Woods-Saxon form of the shell model potential. As a result of calculations, it has been found that the calculated isospin admixture probability is proportional to a higher power of Z than the results of other theoretical studies.Item Self-consistent calculations of isospin admixtures in the ground states of the N=Z nuclei in the mass region of 50-100 (vol 788, pg 279c, 2007)Babacan, T; Salamov, DI; Kucukbursa, A; Unlu, S; Demir, AItem Symmetry groups of boundary layer equations of a class of non-Newtonian fluidsPakdemirli, M; Yurusoy, M; Kucukbursa, AA non-Newtonian fluid model in which the stress is an arbitrary function of the symmetric part of the velocity gradient is considered. Symmetry groups of the two-dimensional boundary layer equations of the model are found by using exterior calculus. The complete isovector field corresponding to some cases, such as arbitrary shear function, Newtonian fluids, and power-law fluids, are found. Similarly, solutions for some special transformations are presented. Results obtained in a previous paper [M. Pakdemirli, Int. J. Non-Linear Mech. 29, 187 (1994)] using special groups of transformations (scaling, spiral) are verified in this study using a general approach. (C) 1996 Elsevier Science Ltd.